(Round answer to three decimal places ex. 2.091) QUESTION 6 Xona, a photocopy company plans to estimate the mean of visitors to its shop. There was a previous study that showed that the standard...

Extracted text: (Round answer to three decimal places ex. 2.091) QUESTION 6 Xona, a photocopy company plans to estimate the mean of visitors to its shop. There was a previous study that showed that the standard deviation is 42. with confidence level 95 percent and allowable error of 1 Based on that, the required sample size to estimate the population mean is equal to? QUESTION 7 Degree of freedom is an important factor in determining the size of a sample. And it's value is always between (0-20). ick Save and Submit to save and submit. Click Save All Answers to save all answers.